/*
 * Copyright 2016 requery.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.requery.query.function;

import io.requery.query.Expression;

/**
 * Function
 *
 * @param <V>
 */
public class Avg<V> extends Function<V> {
    private final Expression<V> expression;
    private Avg(Expression<V> expression) {
        super("avg", expression.getClassType());
        this.expression = expression;
    }

    /**
     * avg
     *
     * @param expression Expression
     * @param <U> Avg
     * @return Avg
     */
    public static <U> Avg<U> avg(Expression<U> expression) {
        return new Avg<>(expression);
    }

    @Override
    public Object[] arguments() {
        return new Object[] {expression};
    }
}
